Simon6809-Turbo is an improved version of Simon6809, so I can run FLEX 6809 operating system.
This project is retired and shown for educational value.
Simon6809-Turbo grow out of a curiosity to run FLEX operating system.
- modular board design (CPU + PIA + USB/SDCARD + …)
- 512KB RAM (w/ memory banking since 6809 can only see 64KB)
- ShadowRAM for ROM code.
- support for multiple PIA and I/O devices.
- USBWiz OEM Board for USB Host capability + SDCARD access
- SDCARD for emulating Flex Disk Structure.
- LCD Display support
This may be the first 8bit computer to have USB Host capability :)
As much as this design was powerful, it was complicated for somebody else to build due to use of GAL’s for address decoding and RAM bank support.
CPU Board
IO Board:
USBWiz OEM Board (USB Host & SDCARD):
CPU + IO boards together:
CPU + IO + USBWiz boards together: